1/2 (1-e-0,01(100-x)) + 1/2 (1-e-0,01(0-x)) = 0 | *2
(1-e-0,01(100-x)) + (1-e-0,01(0-x)) = 0
1-e-0,01(100-x) = e-0,01(0-x) - 1
2 - e-0,01(100-x) = e-0,01(0-x)
2 - e-1+0,01x = e0,01x
2 - e-1 * e0,01x = e0,01x
2 = e-1 * e0,01x + e0,01x
2 = ( e-1 + 1 ) * e0,01x
2 / ( e-1 + 1 ) = e0,01x
1,462 = e0,01x
ln(1,462) = 0,01x
100 * ln(1,462) = x
37,99 = x